230
System Manual – MOVIDRIVE® compact Drive Inverters
4
Overload capacity of the inverter
Project Planning
Cycle frequency f
PWM
= 16 kHz:
The permitted mean inverter output current is I
out RMS
≤
69 % I
D
.
MC_4_A, sizes 1-5
overload capacity
at 500 V / 25 °C
Cycle frequency f
PWM
= 8 kHz:
The permitted mean inverter output current is I
out RMS
≤
80 % I
D
.
56721AXX
Figure 75: Short-term overload capacity at f
PWM
= 16 kHz (400 V / 40 °C)
130 % I
D
150 %
I
D
220 % I
D
175 % I
D
60 % I
D
40 % I
D
20 % I
D
0 % I
D
1
0.8
0.6
0.4
0.2
0
0.2
0.4
0.6
0.8
1
t1 [s]
t2 [s]
I
out 2
I
out 1
V
1
= 3 x AC 400 V
ϑ
amb
= 40 °C
f
PWM
(P860 / P861) = 16 kHz
I
out RMS
≤
69 % I
D
56725AXX
Figure 76: Short-term overload capacity at f
PWM
= 8 kHz (500 V / 25 °C)
120 %
I
D
130 %
I
D
150 %
I
D
60 % I
D
40 % I
D
20 % I
D
0 % I
D
1
0.8
0.6
0.4
0.2
0
0.2
0.4
0.6
0.8
1
t1 [s]
t2 [s]
I
out 2
I
out 1
V
1
= 3 x AC 500 V
ϑ
amb
= 25 °C
f
PWM
(P860 / P861) = 8 kHz
I
out RMS
≤
80 % I
D
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